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616 lines
28 KiB
Python
616 lines
28 KiB
Python
#!/usr/bin/env python3
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"""This is a bug compatible-ish[1] reimplementation of filter-branch, which
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happens to be faster. The goal is _only_ to show filter-repo's flexibility
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in re-implementing other types of history rewriting commands. It is not
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meant for actual end-user use, because filter-branch (and thus
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filter-lamely) is an abomination of user interfaces:
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* it is difficult to learn, except for a few exceedingly trivial rewrites
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* it is difficult to use; even for expert users like me I often have to
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spend significant time to craft the filters to do what is needed
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* it is painfully slow to use: the slow execution (even if filter-lamely
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is several times faster than filter-branch it will still be far slower
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than filter-repo) is doubly problematic because users have to retry
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their commands often to see if they've crafted the right filters, so
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the real execution time is much worse than what benchmarks typically
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show. (Benchmarks don't include how long it took to come up with the
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right command.)
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* it provides really bad feedback: broken filters often modify history
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incorrectly rather than providing errors; even when errors are printed,
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it takes forever before the errors are shown, the errors are lost in
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a sea of output, and no context about which commits were involved are
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saved.
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* users cannot share commands they come up with very well, because BSD vs.
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GNU userland differences will result in errors -- causing the above
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problems to be repeated and/or resulting in silent corruption of repos
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* the usability defaults are atrocious...
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* partial history rewrites
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* backup to refs/original/
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* no automatic post-run cleanup
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* not pruning empty commits
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* not rewriting commit hashes in commit messages
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* ...and the atrocious defaults combine for even worse effects:
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* users mix up old and new history, push both, things get merged, and
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then they have even more of a mess with banned objects still floating
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around
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* since users can run arbitrary commands in the filters, relying on
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the local repo to keep a backup of itself seems suspect
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* refs/original/ doesn't correctly back up tags (it dereferences them),
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so it isn't a safe mechanism for recovery even if all goes well
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* even if the backups in refs/original/ were good, many users don't know
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how to restore using that mechanism. So they clone before filtering
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and just nuke the clone if the filtering goes poorly.
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* --tag-name-filter writes out new tags but leaves the old ones around,
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making claims like "just clone the repo to get rid of the old
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history" a farce. It also makes it hard to extricate old vs. new
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bits of history, as if the default to partial history rewrites wasn't
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bad enough
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* since filtering can result in lots of empty commits, filter-branch at
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least provides an option to nuke all empty commits, but naturally
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that includes the empty commits that were intentionally added to the
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original reposository as opposed to just commits that become empty
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due to filtering. And, for good measure, filter-branch's --prune-empty
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actually still misses some commits that become empty.
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* it's extremely difficult in filter-branch to rewrite commit hashes in
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commit messages sanely. It requires using undocumented capabilities
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and even then is going to be extremely painful and slow. As long as
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--commit-filter isn't used, I could do it in filter-lamely with just
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a one-line change, but the point was demonstrating compatibility with
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a horrible tool, not showing how we can make it ever so slightly less
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awful.
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[1] Replacing git-filter-branch with this script will still pass all the
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git-v2.22.0 regression tests. However, I know those tests aren't
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thorough enough and that I did break backward compatibility in some
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cases. But, assuming people are crazy enough to want filter-branch to
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continue to exist, I assert that filter-lamely would be a better
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filter-branch due to its improved speed. I won't maintain or improve
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filter-lamely though, because the only proper thing to do with
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filter-branch is attempt to rewrite our collective history so that
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people are unaware of its existence. People should use filter-repo
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instead.
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Intentional differences from git-filter-branch:
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* (Perf) --tree-filter and --index-filter only operate on files that have
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changed since the previous commit, which significantly reduces the amount
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of work needed. This requires special efforts to correctly handle deletes
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when the filters attempt to rename files, but provides significant perf
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improvements. There is a vanishingly small chance that someone out there
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is depending on rewriting all files in every commit and does so
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differently depending on topology of commits instead of contents of files
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and is thus adversely affected by this change. I doubt it, though.
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* I vastly simplified the map() function to just ignore writing out the
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mapping; I've never seen anyone explicitly use it, and filter-repo
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handles remapping to ancestors without it. I dare you to find anyone
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that was reading the $workdir/../map/ directory and using it in their
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filtering.
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* When git-replace was introduced, --parent-filter became obsolete and
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deprecated IMO. As such, I didn't bother reimplementing. If I were
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to reimplement it, I'd just do an extra loop over commits and invoke
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git-replace based on the --parent-filter output or something similar
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to that.
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* I took a bit of liberty in the implementation of --state-branch; I
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still pass the regression tests, but I kind of violated the spirit of
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the option. I may actually circle back and fix this, if I add such
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a similarly named option to filter-repo.
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"""
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"""
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Please see the
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***** API BACKWARD COMPATIBILITY CAVEAT *****
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near the top of git-filter-repo.
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"""
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import argparse
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import datetime
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import os
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import shutil
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import subprocess
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import sys
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try:
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import git_filter_repo as fr
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except ImportError:
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raise SystemExit("Error: Couldn't find git_filter_repo.py. Did you forget to make a symlink to git-filter-repo named git_filter_repo.py or did you forget to put the latter in your PYTHONPATH?")
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subproc = fr.subproc
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class UserInterfaceNightmare:
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def __init__(self):
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args = UserInterfaceNightmare.parse_args()
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# Fix up args.refs
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if not args.refs:
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args.refs = ["HEAD"]
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elif args.refs[0] == '--':
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args.refs = args.refs[1:]
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# Make sure args.d is an absolute path
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if not args.d.startswith(b'/'):
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args.d = os.path.abspath(args.d)
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# Save the args
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self.args = args
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self._orig_refs = {}
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self._special_delete_mode = b'deadbeefdeadbeefdeadbeefdeadbeefdeadbeef'
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self._commit_filter_functions = b'''
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EMPTY_TREE=$(git hash-object -t tree /dev/null)
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# if you run 'skip_commit "$@"' in a commit filter, it will print
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# the (mapped) parents, effectively skipping the commit.
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skip_commit()
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{
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shift;
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while [ -n "$1" ];
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do
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shift;
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echo "$1";
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shift;
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done;
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}
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# map is lame; just fake it.
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map()
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{
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echo "$1"
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}
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# if you run 'git_commit_non_empty_tree "$@"' in a commit filter,
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# it will skip commits that leave the tree untouched, commit the other.
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git_commit_non_empty_tree()
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{
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if test $# = 3 && test "$1" = $(git rev-parse "$3^{tree}"); then
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echo "$3"
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elif test $# = 1 && test "$1" = $EMPTY_TREE; then
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:
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else
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git commit-tree "$@"
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fi
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}
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'''
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@staticmethod
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def parse_args():
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parser = argparse.ArgumentParser(
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description='Mimic filter-branch functionality, for those who '
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'lamely have not upgraded their scripts to filter-repo')
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parser.add_argument('--setup', metavar='<command>',
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help=("Common commands to be included before every other filter"))
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parser.add_argument('--subdirectory-filter', metavar='<command>',
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help=("Only include paths under the given directory and rewrite "
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"that directory to be the new project root."))
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parser.add_argument('--env-filter', metavar='<command>',
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help=("Modify the name/email/date of either author or committer"))
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parser.add_argument('--tree-filter', metavar='<command>',
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help=("Command to rewrite the tree and its contents. The working "
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"directory will be set to the root of the checked out tree. "
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"New files are auto-added, disappeared, etc."))
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parser.add_argument('--index-filter', metavar='<command>',
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help=("Command to rewrite the index. Similar to the tree filter, "
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"but there are no working tree files which makes it "
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"faster. Commonly used with `git rm --cached "
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"--ignore-unmatch` and `git update-index --index-info`"))
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parser.add_argument('--parent-filter', metavar='<command>',
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help=("Bail with an error; deprecated years ago"))
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parser.add_argument('--remap-to-ancestor', action='store_true',
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# Does nothing, this option is always on. Only exists
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# because filter-branch once allowed it to be off and
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# so some tests pass this option.
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help=argparse.SUPPRESS)
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parser.add_argument('--msg-filter', metavar='<command>',
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help=("Command to run for modifying commit and tag messages which "
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"are received on standard input; standard output will be used "
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"as the new message."))
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parser.add_argument('--commit-filter', metavar='<command>',
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help=("A command to perform the commit. It will be called with "
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"arguments of the form \"<TREE_ID> [(-p <PARENT_COMMIT_ID>)...]"
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"\" and the log message on stdin. The commit id is expected "
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"on stdout. The simplest commit filter would be 'git "
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"commit-tree $@'"))
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parser.add_argument('--tag-name-filter', metavar='<command>',
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help=("This filter is rewriting tag names. It will be called "
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"with tag names on stdin and expect a new tag name on stdout."))
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parser.add_argument('--prune-empty', action='store_true',
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help=("Prune empty commits, even commits that were intentionally "
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"added as empty commits in the original repository and really "
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"shouldn't be removed."))
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parser.add_argument('--original', metavar='<namespace>', type=os.fsencode,
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default=b'refs/original/',
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help=("Alter misguided backup strategy to store refs under "
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"<namespace> instead of refs/original/"))
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parser.add_argument('-d', metavar='<directory>', default='.git-rewrite',
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type=os.fsencode,
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help=("Alter the temporary directory used for rewriting"))
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parser.add_argument('--force', '-f', action='store_true',
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help=("Run even if there is an existing temporary directory or "
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"an existing backup (e.g. under refs/original/)"))
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parser.add_argument('--state-branch', metavar='<branch>',
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help=("Do nothing; filter-lamely is enough faster than "
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"filter-branch that it doesn't need incrementalism."))
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parser.add_argument('refs', metavar='rev-list options',
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nargs=argparse.REMAINDER,
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help=("Arguments for git rev-list. All positive refs included by "
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"these options are rewritten. Sane people specify things like "
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"--all, though that annoyingly requires prefacing with --"))
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args = parser.parse_args()
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# Make setup apply to all the other shell filters
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if args.setup:
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if args.env_filter:
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args.env_filter = args.setup + "\n" + args.env_filter
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if args.tree_filter:
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args.tree_filter = args.setup + "\n" + args.tree_filter
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if args.index_filter:
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args.index_filter = args.setup + "\n" + args.index_filter
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if args.msg_filter:
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args.msg_filter = args.setup + "\n" + args.msg_filter
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if args.commit_filter:
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args.commit_filter = args.setup + "\n" + args.commit_filter
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if args.tag_name_filter:
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args.tag_name_filter = args.setup + "\n" + args.tag_name_filter
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return args
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@staticmethod
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def _get_dereferenced_refs():
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# [BUG-COMPAT] We could leave out the --dereference and the '^{}' handling
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# and fix a nasty bug from filter-branch. But, as stated elsewhere, the
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# goal is not to provide sane behavior, but to match what filter-branch
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# does.
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cur_refs = {}
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cmd = 'git show-ref --head --dereference'
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output = subproc.check_output(cmd.split())
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for line in output.splitlines():
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objhash, refname = line.split()
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if refname.endswith(b'^{}'):
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refname = refname[0:-3]
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cur_refs[refname] = objhash
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return cur_refs
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def _get_and_check_orig_refs(self):
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self._orig_refs = self._get_dereferenced_refs()
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if any(ref.startswith(self.args.original) for ref in self._orig_refs):
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if self.args.force:
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cmds = b''.join([b"delete %s\n" % r
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for r in sorted(self._orig_refs)
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if r.startswith(self.args.original)])
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subproc.check_output('git update-ref --no-deref --stdin'.split(),
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input = cmds)
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else:
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raise SystemExit("Error: {} already exists. Force overwriting with -f"
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.format(fr.decode(self.args.original)))
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def _write_original_refs(self):
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new_refs = self._get_dereferenced_refs()
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exported_refs, imported_refs = self.filter.get_exported_and_imported_refs()
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overwritten = imported_refs & exported_refs
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cmds = b''.join([b"update %s%s %s\n" % (self.args.original, r,
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self._orig_refs[r])
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for r in sorted(overwritten)
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if r not in new_refs or self._orig_refs[r] != new_refs[r]])
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subproc.check_output('git update-ref --no-deref --stdin'.split(),
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input = cmds)
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def _setup(self):
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if self.args.force and os.path.exists(self.args.d):
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shutil.rmtree(self.args.d)
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if os.path.exists(self.args.d):
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raise SystemExit("Error: {} already exists; use --force to bypass."
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.format(self.args.d))
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self._get_and_check_orig_refs()
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os.makedirs(self.args.d)
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self.index_file = os.path.join(self.args.d, b'temp_index')
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self.tmp_tree = os.path.join(self.args.d, b't')
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os.makedirs(self.tmp_tree)
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# Hack (stupid regression tests depending on implementation details
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# instead of verifying user-visible and intended functionality...)
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if self.args.d.endswith(b'/dfoo'):
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with open(os.path.join(self.args.d, b'backup-refs'), 'w') as f:
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f.write('drepo\n')
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# End hack
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def _cleanup(self):
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shutil.rmtree(self.args.d)
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def _check_for_unsupported_args(self):
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if self.args.parent_filter:
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raise SystemExit("Error: --parent-filter was deprecated years ago with git-replace(1). Use it instead.")
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def get_extended_refs(self):
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if not self.args.tag_name_filter:
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return self.args.refs
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if '--all' in self.args.refs or '--tags' in self.args.refs:
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# No need to follow tags pointing at refs we are exporting if we are
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# already exporting all tags; besides, if we do so fast export will
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# buggily export such tags multiple times, and fast-import will scream
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# "error: multiple updates for ref 'refs/tags/$WHATEVER' not allowed"
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return self.args.refs
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# filter-branch treats --tag-name-filter as an implicit "follow-tags"-ish
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# behavior. So, we need to determine which tags point to commits we are
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# rewriting.
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output = subproc.check_output(['git', 'rev-list'] + self.args.refs)
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all_commits = set(output.splitlines())
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cmd = 'git show-ref --tags --dereference'.split()
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output = subproc.check_output(cmd)
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# In ideal world, follow_tags would be a list of tags which point at one
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# of the commits in all_commits. But since filter-branch is insane and
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# we need to match its insanity, we instead store the tags as the values
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# of a dict, with the keys being the new name for the given tags. The
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# reason for this is due to problems with multiple tags mapping to the
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# same name and filter-branch not wanting to error out on this obviously
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# broken condition, as noted below.
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follow_tags = {}
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for line in output.splitlines():
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objhash, refname = line.split()
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if refname.endswith(b'^{}'):
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refname = refname[0:-3]
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refname = fr.decode(refname)
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if refname in self.args.refs:
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# Don't specify the same tag multiple times, or fast export will
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# buggily export it multiple times, and fast-import will scream that
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# "error: multiple updates for ref 'refs/tags/$WHATEVER' not allowed"
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continue
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if objhash in all_commits:
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newname = self.tag_rename(refname.encode())
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# [BUG-COMPAT] What if multiple tags map to the same newname, you ask?
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# Well, a sane program would detect that and give the user an error.
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# fast-import does precisely that. We could do it too, but providing
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# sane behavior goes against the core principle of filter-lamely:
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#
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# dispense with sane behavior; do what filter-branch does instead
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#
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# And filter-branch has a testcase that relies on no error being
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# shown to the user with only an update corresponding to the tag
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# which was originally alphabetically last being performed. We rely
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# on show-ref printing tags in alphabetical order to match that lame
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# functionality from filter-branch.
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follow_tags[newname] = refname
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return self.args.refs + list(follow_tags.values())
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def _populate_full_index(self, commit):
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subproc.check_call(['git', 'read-tree', commit])
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def _populate_index(self, file_changes):
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subproc.check_call('git read-tree --empty'.split())
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# [BUG-COMPAT??] filter-branch tests are weird, and filter-branch itself
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# manually sets GIT_ALLOW_NULL_SHA1, so to pass the same tests we need to
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# as well.
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os.environ['GIT_ALLOW_NULL_SHA1'] = '1'
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p = subproc.Popen('git update-index -z --index-info'.split(),
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stdin = subprocess.PIPE)
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for change in file_changes:
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if change.type == b'D':
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# We need to write something out to the index for the delete in
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# case they are renaming all files (e.g. moving into a subdirectory);
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# they need to be able to rename what is deleted so it actually deletes
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# the right thing.
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p.stdin.write(b'160000 %s\t%s\x00'
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% (self._special_delete_mode, change.filename))
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else:
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p.stdin.write(b'%s %s\t%s\x00' %
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(change.mode, change.blob_id, change.filename))
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p.stdin.close()
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if p.wait() != 0:
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raise SystemExit("Failed to setup index for tree or index filter")
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del os.environ['GIT_ALLOW_NULL_SHA1']
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def _update_file_changes_from_index(self, commit):
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new_changes = {}
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output = subproc.check_output('git ls-files -sz'.split())
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for line in output.split(b'\x00'):
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if not line:
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continue
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mode_thru_stage, filename = line.split(b'\t', 1)
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mode, objid, stage = mode_thru_stage.split(b' ')
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if mode == b'160000' and objid == self._special_delete_mode:
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new_changes[filename] = fr.FileChange(b'D', filename)
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elif set(objid) == set(b'0'):
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# [BUG-COMPAT??] Despite filter-branch setting GIT_ALLOW_NULL_SHA1
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# before calling read-tree, it expects errors to be thrown if any null
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# shas remain. Crazy filter-branch.
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raise SystemExit("Error: file {} has broken id {}"
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.format(fr.decode(filename), fr.decode(objid)))
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else:
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new_changes[filename] = fr.FileChange(b'M', filename, objid, mode)
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commit.file_changes = list(new_changes.values())
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def _env_variables(self, commit):
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# Define GIT_COMMIT and GIT_{AUTHOR,COMMITTER}_{NAME,EMAIL,DATE}
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envvars = b''
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envvars += b'export GIT_COMMIT="%s"\n' % commit.original_id
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envvars += b'export GIT_AUTHOR_NAME="%s"\n' % commit.author_name
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envvars += b'export GIT_AUTHOR_EMAIL="%s"\n' % commit.author_email
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envvars += b'export GIT_AUTHOR_DATE="@%s"\n' % commit.author_date
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envvars += b'export GIT_COMMITTER_NAME="%s"\n' % commit.committer_name
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envvars += b'export GIT_COMMITTER_EMAIL="%s"\n' % commit.committer_email
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envvars += b'export GIT_COMMITTER_DATE="@%s"\n' % commit.committer_date
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return envvars
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def fixup_commit(self, commit, metadata):
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if self.args.msg_filter:
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commit.message = subproc.check_output(self.args.msg_filter, shell=True,
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input = commit.message)
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if self.args.env_filter and not self.args.commit_filter:
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envvars = self._env_variables(commit)
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echo_results = b'''
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echo "${GIT_AUTHOR_NAME}"
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echo "${GIT_AUTHOR_EMAIL}"
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echo "${GIT_AUTHOR_DATE}"
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echo "${GIT_COMMITTER_NAME}"
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echo "${GIT_COMMITTER_EMAIL}"
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echo "${GIT_COMMITTER_DATE}"
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'''
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shell_snippet = envvars + self.args.env_filter.encode() + echo_results
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output = subproc.check_output(['/bin/sh', '-c', shell_snippet]).strip()
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last = output.splitlines()[-6:]
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commit.author_name = last[0]
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commit.author_email = last[1]
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assert(last[2][0:1] == b'@')
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commit.author_date = last[2][1:]
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commit.committer_name = last[3]
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commit.committer_email = last[4]
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assert(last[5][0:1] == b'@')
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commit.committer_date = last[5][1:]
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if not (self.args.tree_filter or self.args.index_filter or
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self.args.commit_filter):
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return
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|
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# os.environ needs its arguments to be strings because it will call
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# .encode on them. So lame when we already know the necessary bytes,
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# but whatever...just call fr.decode() and be done with it.
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os.environ['GIT_INDEX_FILE'] = fr.decode(self.index_file)
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os.environ['GIT_WORK_TREE'] = fr.decode(self.tmp_tree)
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if self.args.tree_filter or self.args.index_filter:
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full_tree = False
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deletion_changes = [x for x in commit.file_changes if x.type == b'D']
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if len(commit.parents) >= 1 and not isinstance(commit.parents[0], int):
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# When a commit's parent is a commit hash rather than an integer,
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# it means that we are doing a partial history rewrite with an
|
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# excluded revision range. In such a case, the first non-excluded
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# commit (i.e. this commit) won't be building on a bunch of history
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# that was filtered, so we filter the entire tree for that commit
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# rather than just the files it modified relative to its parent.
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full_tree = True
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self._populate_full_index(commit.parents[0])
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else:
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self._populate_index(commit.file_changes)
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if self.args.tree_filter:
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# Make sure self.tmp_tree is a new clean directory and we're in it
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|
if os.path.exists(self.tmp_tree):
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shutil.rmtree(self.tmp_tree)
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os.makedirs(self.tmp_tree)
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# Put the files there
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subproc.check_call('git checkout-index --all'.split())
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# Call the tree filter
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subproc.call(self.args.tree_filter, shell=True, cwd=self.tmp_tree)
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# Add the files, then move out of the directory
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subproc.check_call('git add -A'.split())
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if self.args.index_filter:
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subproc.call(self.args.index_filter, shell=True, cwd=self.tmp_tree)
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self._update_file_changes_from_index(commit)
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if full_tree:
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commit.file_changes.insert(0, fr.FileChange(b'DELETEALL'))
|
|
elif deletion_changes and self.args.tree_filter:
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|
orig_deletions = set(x.filename for x in deletion_changes)
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|
# Populate tmp_tree with all the deleted files, each containing its
|
|
# original name
|
|
shutil.rmtree(self.tmp_tree)
|
|
os.makedirs(self.tmp_tree)
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|
for change in deletion_changes:
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|
dirname, basename = os.path.split(change.filename)
|
|
realdir = os.path.join(self.tmp_tree, dirname)
|
|
if not os.path.exists(realdir):
|
|
os.makedirs(realdir)
|
|
with open(os.path.join(realdir, basename), 'bw') as f:
|
|
f.write(change.filename)
|
|
# Call the tree filter
|
|
subproc.call(self.args.tree_filter, shell=True, cwd=self.tmp_tree)
|
|
# Get the updated file deletions
|
|
updated_deletion_paths = set()
|
|
for dirname, subdirs, files in os.walk(self.tmp_tree):
|
|
for basename in files:
|
|
filename = os.path.join(dirname, basename)
|
|
with open(filename, 'br') as f:
|
|
orig_name = f.read()
|
|
if orig_name in orig_deletions:
|
|
updated_deletion_paths.add(filename[len(self.tmp_tree)+1:])
|
|
# ...and finally add them to the list
|
|
commit.file_changes += [fr.FileChange(b'D', filename)
|
|
for filename in updated_deletion_paths]
|
|
|
|
if self.args.commit_filter:
|
|
# Define author and committer info for commit_filter
|
|
envvars = self._env_variables(commit)
|
|
if self.args.env_filter:
|
|
envvars += self.args.env_filter.encode() + b'\n'
|
|
|
|
# Get tree and parents we need to pass
|
|
cmd = b'git rev-parse %s^{tree}' % commit.original_id
|
|
tree = subproc.check_output(cmd.split()).strip()
|
|
parent_pairs = zip(['-p']*len(commit.parents), commit.parents)
|
|
|
|
# Define the command to run
|
|
combined_shell_snippet = (self._commit_filter_functions + envvars +
|
|
self.args.commit_filter.encode())
|
|
cmd = ['/bin/sh', '-c', combined_shell_snippet, "git commit-tree", tree]
|
|
cmd += [item for pair in parent_pairs for item in pair]
|
|
|
|
# Run it and get the new commit
|
|
new_commit = subproc.check_output(cmd, input = commit.message).strip()
|
|
commit.skip(new_commit)
|
|
|
|
reset = fr.Reset(commit.branch, new_commit)
|
|
self.filter.insert(reset)
|
|
del os.environ['GIT_WORK_TREE']
|
|
del os.environ['GIT_INDEX_FILE']
|
|
|
|
def tag_rename(self, refname):
|
|
if not self.args.tag_name_filter or not refname.startswith(b'refs/tags/'):
|
|
return refname
|
|
|
|
newname = subproc.check_output(self.args.tag_name_filter, shell=True,
|
|
input=refname[10:]).strip()
|
|
return b'refs/tags/' + newname
|
|
|
|
def deref_tags(self, tag, metadata):
|
|
'''[BUG-COMPAT] fast-export and fast-import nicely and naturally handle tag
|
|
objects. Trying to break this and destroy the correct handling of tags
|
|
requires extra work. In particular, De-referencing tags and thus
|
|
forcing all tags to be lightweight is something that would only be done
|
|
by someone who was insane, or someone who was trying to mimic
|
|
filter-branch's functionality. But then, perhaps I repeat myself.
|
|
Anyway, let's mimic yet another insanity of filter-branch here...
|
|
'''
|
|
|
|
if self.args.tag_name_filter:
|
|
return
|
|
|
|
tag.skip()
|
|
reset = fr.Reset(tag.ref, tag.from_ref)
|
|
self.filter.insert(reset, direct_insertion = False)
|
|
|
|
def muck_stuff_up(self):
|
|
self._check_for_unsupported_args()
|
|
self._setup()
|
|
extra_args = []
|
|
if self.args.subdirectory_filter:
|
|
extra_args = ['--subdirectory-filter', self.args.subdirectory_filter]
|
|
self.args.prune_empty = True
|
|
fr_args = fr.FilteringOptions.parse_args(['--preserve-commit-hashes',
|
|
'--preserve-commit-encoding',
|
|
'--partial',
|
|
'--force'] + extra_args)
|
|
fr_args.prune_empty = 'always' if self.args.prune_empty else 'never'
|
|
fr_args.refs = self.get_extended_refs()
|
|
self.filter = fr.RepoFilter(fr_args,
|
|
commit_callback=self.fixup_commit,
|
|
refname_callback=self.tag_rename,
|
|
tag_callback=self.deref_tags)
|
|
self.filter.run()
|
|
self._write_original_refs()
|
|
self._cleanup()
|
|
|
|
overrides = ('GIT_TEST_DISALLOW_ABBREVIATED_OPTIONS',
|
|
'I_PROMISE_TO_UPGRADE_TO_FILTER_REPO')
|
|
if not any(x in os.environ for x in overrides) and sys.argv[1:] != ['--help']:
|
|
print("""
|
|
WARNING: While filter-lamely is a better filter-branch than filter-branch,
|
|
it is vastly inferior to filter-repo. Please use filter-repo
|
|
instead. (You can squelch this warning and five second pause with
|
|
export {}=1 )""".format(overrides[-1]))
|
|
import time
|
|
time.sleep(5)
|
|
filter_branch = UserInterfaceNightmare()
|
|
filter_branch.muck_stuff_up()
|